Improved high Q value of CaTiO3-Ca(Mg1/3Nb2/3)O3 solid solution with near zero temperature coefficient of resonant frequency

Cheng-Liang Huang, Hui Liang Chen, Chen Cher Wu

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

The crystal structures and the microwave dielectric properties of (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 perovskite ceramic system have been investigated. (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 solid solution exhibited orthorhombic crystal structures for all compositions. With x = 0.66, a new microwave dielectric ceramic material 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 applicable to microwave devices is suggested and possesses the dielectric properties of a dielectric constant εr ∼ 48, a Q×f values ∼ 32,500 (at 6.7 GHz) and a τf value ∼-2 ppm/°C at 1450°C for 3 h. Further improvement of the Q×f value can be achieved by extending the sintering time to 6 h. It reveals a higher Q×f value of 34,000 (at 6.7 GHz) without degrading other microwave dielectric properties of 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 ceramics.

Original languageEnglish
Pages (from-to)1645-1652
Number of pages8
JournalMaterials Research Bulletin
Volume36
Issue number9
DOIs
Publication statusPublished - 2001 Jul 1

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Dielectric properties
resonant frequencies
Q factors
Solid solutions
Natural frequencies
solid solutions
Microwaves
dielectric properties
microwaves
ceramics
coefficients
Crystal structure
Microwave devices
Ceramic materials
Perovskite
Temperature
crystal structure
temperature
Permittivity
Sintering

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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title = "Improved high Q value of CaTiO3-Ca(Mg1/3Nb2/3)O3 solid solution with near zero temperature coefficient of resonant frequency",
abstract = "The crystal structures and the microwave dielectric properties of (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 perovskite ceramic system have been investigated. (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 solid solution exhibited orthorhombic crystal structures for all compositions. With x = 0.66, a new microwave dielectric ceramic material 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 applicable to microwave devices is suggested and possesses the dielectric properties of a dielectric constant εr ∼ 48, a Q×f values ∼ 32,500 (at 6.7 GHz) and a τf value ∼-2 ppm/°C at 1450°C for 3 h. Further improvement of the Q×f value can be achieved by extending the sintering time to 6 h. It reveals a higher Q×f value of 34,000 (at 6.7 GHz) without degrading other microwave dielectric properties of 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 ceramics.",
author = "Cheng-Liang Huang and Chen, {Hui Liang} and Wu, {Chen Cher}",
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Improved high Q value of CaTiO3-Ca(Mg1/3Nb2/3)O3 solid solution with near zero temperature coefficient of resonant frequency. / Huang, Cheng-Liang; Chen, Hui Liang; Wu, Chen Cher.

In: Materials Research Bulletin, Vol. 36, No. 9, 01.07.2001, p. 1645-1652.

Research output: Contribution to journalArticle

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PY - 2001/7/1

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N2 - The crystal structures and the microwave dielectric properties of (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 perovskite ceramic system have been investigated. (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 solid solution exhibited orthorhombic crystal structures for all compositions. With x = 0.66, a new microwave dielectric ceramic material 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 applicable to microwave devices is suggested and possesses the dielectric properties of a dielectric constant εr ∼ 48, a Q×f values ∼ 32,500 (at 6.7 GHz) and a τf value ∼-2 ppm/°C at 1450°C for 3 h. Further improvement of the Q×f value can be achieved by extending the sintering time to 6 h. It reveals a higher Q×f value of 34,000 (at 6.7 GHz) without degrading other microwave dielectric properties of 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 ceramics.

AB - The crystal structures and the microwave dielectric properties of (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 perovskite ceramic system have been investigated. (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 solid solution exhibited orthorhombic crystal structures for all compositions. With x = 0.66, a new microwave dielectric ceramic material 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 applicable to microwave devices is suggested and possesses the dielectric properties of a dielectric constant εr ∼ 48, a Q×f values ∼ 32,500 (at 6.7 GHz) and a τf value ∼-2 ppm/°C at 1450°C for 3 h. Further improvement of the Q×f value can be achieved by extending the sintering time to 6 h. It reveals a higher Q×f value of 34,000 (at 6.7 GHz) without degrading other microwave dielectric properties of 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 ceramics.

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